CN213185851U

CN213185851U - Linear stepping motor device

Info

Publication number: CN213185851U
Application number: CN202021612935.2U
Authority: CN
Inventors: 徐琛
Original assignee: Jiangyin Fumao Motor Technology Co ltd
Current assignee: Jiangyin Fumao Motor Technology Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-05-11
Anticipated expiration: 2030-08-05

Abstract

The utility model discloses a linear stepping motor device, linear stepping motor device includes casing, stator module, rotor subassembly and casing down, the rotor subassembly includes axis of rotation, support, main part and spring, utilizes intermeshing between dogtooth, concave tooth and the utmost point tooth makes the axis of rotation with axiality between the main part improves, and utilizes the spring is right the position of axis of rotation and the injecing of deformation, the machine starts with rated voltage, because the axis of rotation with the main part is clearance fit, the main part rotates earlier and obtains kinetic energy, drives the spring rotates with the help of the inertia of main part obtains the torque that is greater than rated torque, has overcome the tightening force torque, makes the rotation of axis of rotation can avoid simultaneously the axis of rotation is in the main part internal deformation improves linear stepping motor's efficiency.

Description

Linear stepping motor device

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a linear stepping motor device.

Background

At present, the small linear stepping motor has wide application prospect in the fields of office automation machines and the like and the automobile field due to the advantages of simple structure, high efficiency, low production cost and the like. Because the linear stepping motor is internally provided with the pole teeth, enough space needs to be reserved for fixing the axial displacement of the bearing support, so that the occupied space of the motor is large, the coaxiality is reduced, and overload current is loaded in a circuit board when the motor is started, so that the motor obtains overload torque to overcome excessive tightening force, and the efficiency of the linear stepping motor is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a linear stepping motor device improves linear stepping motor efficiency.

In order to achieve the above object, the present invention provides a linear stepping motor device, which includes an upper housing, a stator assembly, a rotor assembly and a lower housing, wherein the stator assembly is detachably connected to the upper housing and is located at one side of the upper housing, the rotor assembly is rotatably connected to the stator assembly and is located in the stator assembly, the lower housing is detachably connected to the stator assembly and is located at one side away from the upper housing, the upper housing has a rotation hole, and the rotation hole penetrates through the upper housing;

the rotor subassembly includes axis of rotation, support, main part and spring, the axis of rotation with go up the casing and rotate the connection, and be located rotate in the hole, the axis of rotation includes limiting plate and a plurality of dogtooth, and is a plurality of the dogtooth with axis of rotation fixed connection, and be located the axis of rotation is all around, the limiting plate with axis of rotation fixed connection, and be located a plurality of between the dogtooth, the support with the connection can be dismantled to the dogtooth, and be located the limiting plate top, the support has a plurality of concave teeth, and is a plurality of concave tooth with the dogtooth meshing, and run through the support, the main part with the axis of rotation can be dismantled the connection, and the cover is located in the axis of rotation, the spring with the connection can be dismantled to the main part, and be located in the main part, and the cover is.

The main body comprises a magnetic ring and an injection molding shell, the injection molding shell is detachably connected with the rotating shaft and is located far away from the periphery of the rotating shaft, the injection molding shell is provided with pole teeth, the pole teeth are meshed with the convex teeth and are located close to one side of the concave teeth, and the magnetic ring is detachably connected with the injection molding shell and is located far away from one side of the spring.

The injection molding shell is provided with a first clamping groove and a second clamping groove, and the first clamping groove and the second clamping groove are oppositely arranged and are respectively positioned at the joint of the spring and the injection molding shell.

The stator assembly is provided with a plurality of buckling grooves, and the buckling grooves are located in the stator assembly and respectively face one sides of the upper shell and the lower shell.

The linear stepping motor device further comprises a plurality of clamping pieces, and the plurality of clamping pieces are respectively fixedly connected with the upper shell and the lower shell, detachably connected with the stator assembly and positioned in the buckling grooves.

The linear stepping motor device further comprises a sealing gasket, wherein the sealing gasket is fixedly connected with the upper shell and the rotating shaft and is positioned in the rotating hole.

The upper shell is also provided with a plurality of radiating holes, and the plurality of radiating holes are rectangular and penetrate through the upper shell.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a linear stepping motor device provided by the present invention.

Fig. 2 is a schematic structural diagram of the rotor assembly provided by the present invention.

Fig. 3 is a schematic structural diagram of a rotor assembly without a bracket according to the present invention.

Fig. 4 is a sectional view a-a of fig. 3 provided by the present invention.

Fig. 5 is a schematic view illustrating the connection between the upper housing and the rotor assembly according to the present invention.

Fig. 6 is a schematic structural diagram of a linear stepping motor device without an upper housing according to the present invention.

1-upper shell, 2-stator component, 3-rotor component, 4-lower shell, 5-rotating hole, 6-rotating shaft, 7-bracket, 8-main body, 9-spring, 10-limiting plate, 11-convex tooth, 12-concave tooth, 13-magnetic ring, 14-plastic injection shell, 15-polar tooth, 16-first clamping groove, 17-second clamping groove, 18-buckling groove, 19-clamping piece, 20-sealing gasket and 21-heat dissipation hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, the present invention provides a linear stepping motor device, which includes an upper housing 1, a stator assembly 2, a rotor assembly 3, and a lower housing 4, wherein the stator assembly 2 is detachably connected to the upper housing 1 and is located at one side of the upper housing 1, the rotor assembly 3 is rotatably connected to the stator assembly 2 and is located in the stator assembly 2, the lower housing 4 is detachably connected to the stator assembly 2 and is located at one side away from the upper housing 1, the upper housing 1 has a rotation hole 5, and the rotation hole 5 penetrates through the upper housing 1;

the rotor assembly 3 comprises a rotating shaft 6, a support 7, a main body 8 and a spring 9, the rotating shaft 6 is connected with the upper shell 1 in a rotating mode and is positioned in the rotating hole 5, the rotating shaft 6 comprises a limiting plate 10 and a plurality of convex teeth 11, the convex teeth 11 are fixedly connected with the rotating shaft 6 and are positioned around the rotating shaft 6, the limiting plate 10 is fixedly connected with the rotating shaft 6 and is positioned between the convex teeth 11, the support 7 is detachably connected with the convex teeth 11 and is positioned above the limiting plate 10, the support 7 is provided with a plurality of concave teeth 12, the concave teeth 12 are meshed with the convex teeth 11 and penetrate through the support 7, the main body 8 is detachably connected with the rotating shaft 6 and is sleeved on the rotating shaft 6, the spring 9 is detachably connected with the main body 8 and is positioned in the main body 8, and is sleeved around the rotating shaft 6.

In this embodiment, after the lower housing 4 and the stator assembly 2 are mutually engaged, the rotating shaft 6 is inserted through the rotating hole 5 of the upper housing 1, the rotor assembly 3 is placed in the stator assembly 2, and then the upper housing 1 and the stator assembly 2 are engaged, so that the assembly is simple, the production efficiency is improved, and the disassembly and assembly maintenance is convenient, while in the rotor assembly 3, the rotating shaft 6 is provided with the convex teeth 11 and the limit plates 10, the limit plates 10 are located in the convex teeth 11, when the rotor assembly 3 is assembled, as shown in fig. 2 and 3, the bracket 7 is firstly inserted through the rotating shaft 6, the concave teeth 12 and the convex teeth 11 are engaged with each other, the concave teeth 12 are grooves having the same shape as the convex teeth 11, so that the rotating shaft 6 and the bracket 7 are connected into a whole, the engaging depth of the bracket 7 on the protruding tooth 11 is limited by the limiting plate 10, then the spring 9 is sleeved on one end of the rotating shaft 6 away from the bracket 7 and then put into the main body 8, and the main body 8 and the rotating shaft 6 are engaged with each other, the engaging size of the main body 8 on the protruding tooth 11 is limited by the limiting plate 10, and after the bracket 7, the rotating shaft 6 and the main body 8 are engaged with each other, the limiting plate 10 is completely in the bracket 7, so that the distance between the bracket 7 and the main body 8 can be reduced to be in contact with each other, the size of the rotor assembly 3 can be further reduced, and the working space of the linear stepping motor can be further reduced, wherein the elastic member is a torsion spring 9 and is made of an elastic material: carbon structural steel, silicon-manganese spring 9 steel, stainless steel for spring 9, etc., preferably carbon structural steel. The torsion spring 9 is sleeved on the rotating shaft 6, and a certain gap is formed between the torsion spring 9 and the outer peripheral wall of the rotating shaft 6, the gap does not cause shaft clamping of the rotating shaft 6 in the rotating process and does not cause reduction of the rotating precision of the rotor assembly 3, the bracket 7 can be made of PA66+ GF30 engineering plastics, the weight is light, the rotating of the rotating shaft 6 is not influenced, when the tightening force torque between the rotating shaft 6 and the nut is greater than the rated torque of the motor, the motor is started at rated voltage, because the rotating shaft 6 is in clearance fit with the main body 8, the main body 8 rotates to obtain kinetic energy first to drive the spring 9 to rotate, the rotating shaft 6 obtains the torque greater than the rated torque by means of the inertia of the main body 8, the tightening force torque is overcome, and the rotating of the rotating shaft 6 is realized, and the efficiency of the linear stepping motor is improved by combining higher coaxiality.

Further, the main body 8 comprises a magnetic ring 13 and a molded case 14, the molded case 14 is detachably connected with the rotating shaft 6 and is located far away from the periphery of the rotating shaft 6, the molded case 14 is provided with a pole tooth 15, the pole tooth 15 is meshed with the convex tooth 11 and is located near one side of the concave tooth 12, and the magnetic ring 13 is detachably connected with the molded case 14 and is located far away from one side of the spring 9.

In this embodiment, the molded case 14 is formed integrally with the rotating shaft 6 by the mutual engagement of the pole teeth 15 and the teeth 11, and the magnetic ring 13 is formed integrally with the molded case 14 by injection molding, so that in the rotating process of the rotating shaft 6, the pole teeth 15 are tooth-shaped grooves having the same shape as the teeth 11, the pole teeth 15 drive the molded case 14 to rotate, and the magnetic ring 13 performs cutting magnetic induction linear motion to generate induced electromotive force, so as to ensure that the magnetic ring 13 is consistent with the rotating shaft 6 in the working process, thereby facilitating the control of the generated electromotive force, ensuring that the magnetic ring 13 does not fall off from the molded case 14 in the working process, and ensuring the working efficiency of the linear stepping motor.

Further, the injection molding housing 14 has a first engaging groove 16 and a second engaging groove 17, and the first engaging groove 16 and the second engaging groove 17 are disposed opposite to each other and located at a connection position of the spring 9 and the injection molding housing 14, respectively.

In this embodiment, as shown in fig. 4, the size of the first locking groove 16 and the second locking groove 17 is slightly larger than the diameter of the spring 9, and in this gap, the spring 9 is placed into the first locking groove 16 and the second locking groove 17 for limiting, so that the effective moving range and the telescopic condition of the spring 9 can be ensured, and the deformation of the rotating shaft 6 can be limited.

Further, the stator assembly 2 has a plurality of fastening slots 18, and the fastening slots 18 are located in the stator assembly 2 and respectively face one side of the upper housing 1 and one side of the lower housing 4.

In the present embodiment, as shown in fig. 6, a plurality of fastening grooves 18 are formed on two end surfaces of the stator assembly 2 close to the upper casing 1 and the lower casing 4, and the fastening grooves 18 are used to fasten the upper casing 1 and the lower casing 4, so as to facilitate the installation and the removal of the linear stepping motor.

Further, the linear stepping motor device further comprises a plurality of clamping pieces 19, and the plurality of clamping pieces 19 are respectively and fixedly connected with the upper shell 1 and the lower shell 4, detachably connected with the stator assembly 2, and located in the buckling grooves 18.

In the present embodiment, as shown in fig. 5, the positions and shapes of the locking pieces 19 in the lower case 4 and the upper case 1 are the same, and the upper case 1, the stator assembly 2, and the lower case 4 are assembled into a linear stepping motor device by using the mutual locking of the locking pieces 19 and the locking slots 18, so that the structure is simple, the working time of assembly and disassembly is reduced, and the efficiency is improved.

Further, the linear stepping motor device further comprises a sealing gasket 20, wherein the sealing gasket 20 is fixedly connected with the upper shell 1 and the rotating shaft 6 and is positioned in the rotating hole 5.

In the present embodiment, as shown in fig. 5, since the rotation shaft 6 rotates in the rotation hole 5, abrasion of the upper housing 1 may be caused, and in order to extend the service life of the upper housing 1, the sealing gasket 20 is added between the rotation hole 5 and the rotation shaft 6 to reduce abrasion of the rotation shaft 6 to the upper housing 1, and simultaneously, to reduce the entry of dust and the like into the main body 8 through the rotation hole 5.

Further, the upper housing 1 further has a plurality of heat dissipation holes 21, and the plurality of heat dissipation holes 21 are rectangular and penetrate through the upper housing 1.

In this embodiment, as shown in fig. 5, since the magnetic ring 13 generates some heat during the process of cutting the magnetic induction lines or during the process of operating the motor, some heat dissipation holes 21 are formed in the upper housing 1 to dissipate heat from the rotor assembly 3, thereby ensuring the normal operation of the linear stepping motor.

The utility model discloses a linear stepping motor device, linear stepping motor device includes casing 1, stator module 2, rotor subassembly 3 and lower casing 4, rotor subassembly 3 includes axis of rotation 6, support 7, main part 8 and spring 9, utilizes intermeshing between protruding tooth 11, concave tooth 12 and utmost point tooth 15, makes the axiality between axis of rotation 6 and the main part 8 improve, and utilizes the spring 9 to the injecing of the position and the deformation of axis of rotation 6, and the machine starts with rated voltage, because the axis of rotation 6 with the main part 8 is clearance fit, the main part 8 rotates earlier and obtains kinetic energy, drives the spring 9 rotates, with the help of the inertia of main part 8, obtains the torque that is greater than rated torque, has overcome the tightening force torque, makes the rotation of axis of rotation 6, can avoid simultaneously axis of rotation 6 is in the main part 8 is interior warp, the efficiency of the linear stepping motor is improved. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A linear stepping motor device is characterized in that,

the linear stepping motor device comprises an upper shell, a stator component, a rotor component and a lower shell, wherein the stator component is detachably connected with the upper shell and is positioned on one side of the upper shell;

2. The linear stepping motor apparatus according to claim 1,

the main part includes magnetic ring and the shell of moulding plastics, mould the shell with the rotation axis can be dismantled and be connected to be located and keep away from the rotation axis is all around, mould the shell and have the utmost point tooth, the utmost point tooth with the dogtooth meshing is located and is close to concave tooth one side, the magnetic ring with mould plastics the shell and can dismantle the connection, and be located and keep away from spring one side.

3. The linear stepping motor apparatus according to claim 2,

4. The linear stepping motor apparatus according to claim 1,

5. The linear stepping motor apparatus according to claim 4,

6. The linear stepping motor apparatus according to claim 1,

7. The linear stepping motor apparatus according to claim 1,

the upper shell is also provided with a plurality of heat dissipation holes, and the heat dissipation holes are rectangular and penetrate through the upper shell.